Kate Hudson, in Versace Atelier, attends the Oscars held at Hollywood & Highland Center on March 2, 2014 in Hollywood, California. (Photo by Frazer Harrison/Getty Images)

Kristen Bell, in Zuhair Murad, attends the 2014 Vanity Fair Oscar Party hosted by Graydon Carter on March 2, 2014 in West Hollywood, California. (Photo by Pascal Le Segretain/Getty Images)

Keira Knightley, in Chanel and James Righton, in Christopher Kane, attend the Chanel show as part of the Paris Fashion Week Womenswear Fall/Winter 2014-2015 on March 4, 2014 in Paris, France. (Photo by Marc Piasecki/WireImage)